The EU Environmental Noise Directive, which was implemented in the German Federal Immission Control Act [BImSchG] in 2005, makes noise-reducing construction increasingly important. The Porous Mastic Asphalt (PMA) has such properties and gets its noise reducing property over the quality of the surface texture [BECKENBAUER, 2008]. It is self-compacting and due to its predominantly dense structure, a longer useful life can be expected in addition to its noise-related advantages. The aim of the project was the sustainable and economic optimization of the PMA construction method based on a reliable determination of the special material properties. This overall objective should be achieved by developing and/or adapting a testing system that ensures purposeful mixture optimization. In order to reliably achieve the effect of mortar sedimentation and thus the associated self-compacting effect during installation, the temperature-dependent mortar stiffness was particularly considered. Through targeted examination of the mortar component, a parameter of the mortar stiffness was analyzed, which provides information on the expected sedimentation and the self-compacting effect. The parameter for this is the outflow rate after 20 seconds, which is to be determined in an outflow viscometer at a test temperature of 160 °C and 180 °C. Drilling cores taken from asphalt test slabs turned out to be suitable specimens for evaluation. For this purpose, a production process was developed, which makes it possible to ensure a homogeneous characteristic of the two phases of the PMA over the entire surface of the specimen. The decisive test method for evaluating the resistance to deformation was found to be the dynamic indentation test on drilling cores with lateral fixing in a stainless steel cylinder and testing on the porous side.